Build with the latest HyperDex code from git

I've added tarballs that snapshot the latest code from HyperDex.  The ``hyperdex-client-build.sh`` script will build these tarballs and install them into the ``${BUILD}`` directory.  I cleaned up the installs so they only include the client portions, not HyperDex's daemons and other binaries.

I need someone more familiar with Node to fill in the ``XXX`` to actually build the node sources against the code, and then install everything so that it can be used with ``require('hyperdex-client')``.